A wide range of precursors for selenium electrophiles is already known, but
the requirements for the development of polymer-bound selenium reagents ar
e different. Herein we report mixed acetals as new precursor molecules for
the synthesis of selenium electophiles under very mild reaction conditions.
The use of (MeOCH2Se)(2) allows a very fast access to these mixed acetals.
Chiral precursor molecules can be synthesized as well and employed in effi
cient stereoselective selenenylation reactions.